基于能量法的重型卧式数控车床进给系统动力学分析

摘要

In order to improve position accuracy of heavy-duty CNC horizontal lathe feeding system,its structural characteristics are analyzed. In view of the energy method,the dynamic model of gear transmission in z axes direction feed system is established based on the Lagrange equation of the second equation. The displacement trend of the gears horizontal,radial direction and the engaging force and the trend of the gear pair meshing force with time change are obtained. According to the results of the dynamic analysis,this paper puts forward the improvement measures and methods of the lathe position accuracy.%为了改进重型数控卧式车床进给系统的位置精度，分析了重型卧式数控车床进给系统的传动特点，以能量法的观点，利用拉格朗日第二类方程建立了车床z向进给系统多齿轮传动的动力学模型，得到各齿轮横向、径向和啮合力方向的位移随时间变化趋势及齿轮副的啮合力随时间变化的趋势，根据动力学分析结果，提出了改进车床位置精度的措施和方法。